Pipe-bending machine



2 Sheets-Sheet I E. DEVINE.

PIPE BENDING MACHINE.

LNo Model.

Patented Mar. 3, 1885.

WITNESSES (No M01181.) E DBVINE ZSheets-Sheet 2.

PIPE BENDING MACHINE.

Patented Mar. 3, 1885.

WITNESSES N. PETERS. Pholoiflhugmphcr. Washington D. c.

Hearse STATES PATENT @rr cn,

EDIVARD DEVINE, OF DETROIT, MICHIGAN.

PIPE-BENDINGMACHINE.

SPECIFICATION forming part of Letters Eatent No. 313,302, dated March 3,1885.

(No model.)

To all whom it may concern:

Be it known that I, EDWARD DEVINE, of Detroit, county of Wayne, State ofMichigan, have invented a new and useful Improvement in Pipe-BendingMachines; and I declare the following to be a full, clear, and exactdescription of the same, such as will enable others skilled in the art.to which it pertains to make and use it, reference being had to theaccompanying drawings, which form a part of this specification.

My invention consists in the combination of devices and applianceshereinafter specified, and more particularly pointed out in the claims.

In the drawings, Figure l is an end elevation. Fig. 2 is a sideelevation with the links closed upon the former. Fig. 3 is another sideelevation, showing the position of the table before the links are closedupon the former. Fig. 4 is a plan view showing the table in the sameposition as Fig. 3. Fig. 5 is another view showing the links in the actof being closed upon the former, showing, also, in dotted lines thelinks closed upon the former. Fig. 6 is an inverted plan of the tableand its mechanism.

My invention relates to pipe-bending machines, and is more especiallydesigned as an improvement upon a machine of this nature for whichLetters Patent were granted to me January 27, 1884, No. 292,418. It hasfor its object improved means for adj usting the links to and from thehead of the former, also improved means of reciprocating the adjustabledisks, and contemplates, moreover, a stationary former, while the disksare arranged to be rotated with the links about the head of the formerto bend the pipe.

My invention embraces, in addition, other novel features of constructionand arrangementrelating to the machine as a whole and its improvedoperation.

I carry out my invention as follows:

In the drawings, A is a stationary table. B and B are any suitable meansof support for the same.

C is a stationary former, provided with a groove, 0, upon its edge,adapted to receive the pipe. This former may be secured to the table inany suitable wayas, for instance, it may be bolted at one end, as shownat c. The

outer end or head of the former may be secured upon theupwardly-projected end of the standard B. I prefer to make these formersremovable, so that formers of different sizes can be adjusted upon thetable as may be desired.

D is an annular bed located beneath the former O. This bed is also made,preferably,

that it may be partially rotated about the standard B and disk D, so asto occupy the varying positions shown more particularly in Figs. 1, 2,4, and 5. This support need not I necessarily be pivoted to the standardB, as,

it may be hinged in any proper way so as to be rotated about the fixedformer G.

F represents a series of former-links similar in construction to thosein my patent above referred to. One end of this series of links is solocated upon the table A that they may be moved to and from the formerG. This mechanism is more particularly shown in Fig. 5.

' (t represents a slot in the table, and a a lever mechanism connectedthrough said slot to said series of links, the construction andoperation of which being such as to throw the links back from or againstsaid former, as may be desired. I do not limit myself in any manner toany special mechanism for moving said links; but in Fig. 6 suitablemechanism is 0 shown secured underneath the table A, a lever-arm, aprojecting so as to be readily grasped by the operator. Upon therotatable support E are located one or more disks, G Y

and G, adapted to be reciprocated so as to 5 crowd the former-linksagainst the former as said leaf is rotated. I do not limit myself to anyspecial mechanism for reciprocating said disks. As shown in thedrawings, said leaf is provided with suitable orifices, g and g.

H is any suitable lever mechanism connected with said disks through saidorifices, the construction and operation of which issuch as to cause thereciprocation of said disks.

Said lever mechanism is provided with an ex- .tended lever-arm, H,whereby this reciprocation may be readily accomplished by the operator.Vhile I would have it understood that I do not confine myself to anymechanism for causing the reciprocation of said disks and the movementof said links, the mechanism illustrated in the drawings, and which Ihave found very suitable, is as follows: Connected with the end of theformer links through the slot a is an arm, a pivoted to the lever a",which lever is also pivoted to the bed of the table. In order that thelinks may be moved from either side of the table, I prefer to provide anadditional lever, a, pivoted at one end to the bed of the table andunited to the lever a by the connecting-arm a It will be seen thus thatby throwing either of the levers a or a to or fro the links will bemoved to and from the former 0. To reciprocate the disks G and G, saiddisks are connected through the orifices g and g with a sliding plate,I, which plate is connected by a toggle-arn1, J, to the lever H, saidlever being angular or cam-shaped at its inner end, and pivoted to theleaf, as shown at h.

In order to revolve the support E, it may be provided at any suitablepoint with a lever-socket, K, to receive a removable lever, K. I donotlimit myselfto any particular construction of the annular bed D,asall that is required is any suitable method of hinging the support Eso that it may be rotated about the head of the former O, as described.This bed might be omitted without departing from the principle of'myinvention.

The operation of the device is as follows: By the proper movement of oneof the levers a or a and the lever H the disks G and G and theformer-links are thrown back from the .former O, and the machine isready for the reception of the pipe L. By the opposite movement of saidlevers the former-links are closed against the former O, the pipe beingembraced between the two. The disks G and G are also suitably closedupon said links. Now, by means of the lever K, the supportE is forcedaround into the position shown in dotted lines in Fig. 5, crowding theformerlinks with the pipe about the former O, bending the pipe into thedesired shape. In this way the pipe may be readily bent without itsbeing filled with sand, in the usual manner heretofore practiced, andwithout its being marred. By throwing the support back the pipe may bereleased by throwing back the links and disks in the manner specified.The disks G and G are pivoted upon the support, as in the patentreferred to.

It is evident that for larger or smaller pipe, or in order to make alarger or smaller bend, it will be necessary to make the inner end ofthe chain adjust-able nearer to or farther from the former O. Iaccomplish this object by inserting in the slot at a series of blocks,M, which are removable. Should it be desired to open the chain to agreater distance from the formtanceto which the chain might be removedfrom the former to a shorter distance, one or more blocks M may beinserted in said slot; or smaller blocks may be inserted in the slot, ifpreferred.

I prefer, also, to locate upon the top of the former a plate, N,extended suitably over the end of the former so as to engage over thelinks when they are bent about said former, to more thoroughly hold themdown into proper position. Vhen the support is retracted from theposition shown in dotted lines in Fig. 5, and the disks G and G arethrust back to release the pipe, the links may be removed from the pipeby hand, or this removal may take place automatically by means of arod,O, which is secured at one end to the disk and bent to engage with thepin f, as shown in Fig. 5, when the support is folded about the former.Now, when the support is thrown back into the position shown in Fig. 4,said rod passed around the pin f will of necessity carry the free end ofthe chain back, and the engagement of said rod over said pin will throwthe chain out in the position shown in Fig. 4. This operation isautomatic, as the support is returned to its primary position.

Instead of a hinged support, a portion of the table-bed might beconstructed so as to rotate about the former, and upon which the rotarydisks may be located.

WVhat I claim is- 1. The combination, with a former, of a series ofconnected former-links movable to and from said former, a supportrotatable about the former, and one or more reciprocating disks locatedupon said rotatable support and adapted to be brought tobear againstsaid links, substantially as and for the purpose described.

2. The combination, with the table provided with suitable standards, ofa former, G, secured thereto, a series of connected former-links securedat one end to said table and free to be moved to and fro, a rotatablesupport hinged upon one of said standards and movable about said former,and one or more reciprocating disks attached to said support and adaptedto be brought to bear against said links, substantially as described.

3. The combination, with a table, of a former constructed with a groovededge, a support rotatable about said former, one or more reciprocatingdisks secured to said support, and a series of former-links constructedwith grooved edges and adapted to be carried about the former and forcedagainst the latter as the support is rotated, substantially asdescribed.

IIO

4. The combination, with a table, of a stationary former, adjustableformer-links movable around said former, the levers described for movingsaid links, a support rotatable about said former and provided with oneor more movable disks, and a toggle-lever for moving said disks,substantially as described.

5. Thecombination, witharemovableformer, of a removable annular bed, D,a series of former-links movable about and against said former, and ahinged support provided with one or more reciprocating disks,substantially as and for the purpose described.

6. The combination of a formen having a plate, N, secured thereto, aseries of connected links movable about and against saidformer, and ahinged support provided with one or more reciprocating disks,substantially as and for the purpose described.

7. The combination, with astationary former, of automaticallyreciprocating formerlinks, and a hinged support provided with one

